body {
    font-family: Arial, sans-serif;
    background-color: #f2f2f2;
    margin: 20px;
}

.container {
    max-width: 1200px;
    margin: auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

#form-container, #preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.form-group {
    display: flex;
    align-items: center;
}

.form-group label {
    flex: 0 0 80px;
    margin-right: 10px;
}

.form-group input {
    flex: 1;
    padding: 8px;
    box-sizing: border-box;
}

.form-group span {
    margin-left: 10px;
}

.preview {
    background: #fffc9e;
    padding: 15px;
    border-radius: 8px;
}

.preview-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.btn-copiar-resumo {
    margin-top: 0;
    padding: 8px 12px;
    font-size: 14px;
    background-color: #2f7d32;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.btn-copiar-resumo:hover {
    background-color: #256528;
}

.copy-status {
    font-size: 13px;
    color: #1b5e20;
    min-height: 1em;
}

button {
    margin-top: 20px;
    padding: 10px 20px;
    font-size: 16px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

.invalid {
    border-color: red;
}

span.invalid {
    color: red;
    margin-left: 10px;
}

span.valid {
    color: green;
    margin-left: 10px;
}

input[type="text"] {
    width: 100%;
    box-sizing: border-box;
}